Method for preparing graphene oxide/carbon nano tube/cellulose composite gel from ionic liquid

A carbon nanotube and ionic liquid technology, applied in the field of preparation of cellulose composite gel, can solve problems such as easy deformation of gel and solvent pollution, and achieve the effects of good stability, small solvent loss and excellent electrical properties

Active Publication Date: 2014-10-08
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the technical problem of the pollution from the solvent in the composite gel obtained by the existing method, and the gel is e

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  • Method for preparing graphene oxide/carbon nano tube/cellulose composite gel from ionic liquid
  • Method for preparing graphene oxide/carbon nano tube/cellulose composite gel from ionic liquid
  • Method for preparing graphene oxide/carbon nano tube/cellulose composite gel from ionic liquid

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specific Embodiment approach 1

[0026] Specific embodiment one: the method for preparing graphene oxide / carbon nanotube / cellulose composite gel using ionic liquid in this embodiment is carried out according to the following steps:

[0027] 1. Weigh 0.5-10 parts by weight of cellulose and add it to 100 parts by weight of ionic liquid, stir and dissolve in an oil bath at 70-100°C for 8-12 hours to obtain a cellulose solution;

[0028] 2. Add graphene oxide and carbon nanotubes into the solvent respectively, and ultrasonically treat them to disperse them evenly, so as to obtain graphene oxide dispersion liquid and carbon nanotube dispersion liquid;

[0029] 3. Add the graphene oxide dispersion and the carbon nanotube dispersion to the cellulose solution prepared in step 1, and stir at 80-100°C for 12-24 hours to obtain a cellulose mixture;

[0030] 4. Pour the cellulose mixture obtained in step 3 into the mold, and after standing to cool down, immerse the mold together with the cellulose mixture in the deionize...

specific Embodiment approach 2

[0032] Embodiment 2: This embodiment is different from Embodiment 1 in that the cellulose described in step 1 is α-cellulose. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0033] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the ionic liquid described in step 1 is 1-butyl-3-methylimidazolium chloride. Others are the same as in the first embodiment.

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Abstract

The invention discloses a method for preparing graphene oxide/carbon nano tube/cellulose composite gel from ionic liquid, relating to a preparation method of cellulose composite gel and aiming to solve the technical problems that the composite gel obtained by using the traditional method is polluted by a solvent and the gel is easy to deform in a solvent exchange process. The method comprises the following steps of dissolving cellulose into ionic liquid; then, adding graphene oxide and carbon nano tube dispersing liquid; pouring a mixed solution obtained after reacting under heating into a die; standing for cooling; then, replacing the ionic liquid by using water; next, drying to obtain the graphene oxide/carbon nano tube/cellulose composite gel. The graphene oxide/carbon nano tube/cellulose composite gel can be used for a sensor, an electromagnetic shielding material, a chemically modified electrode or a supercapacitor.

Description

technical field [0001] The invention relates to a preparation method of cellulose composite gel. Background technique [0002] Gel is a swelling body with a cross-linked structure formed by chemical bonds or physical forces between polymer chains, and has a complex spatial network structure. The gel can produce a corresponding volume phase transition when stimulated by external conditions, has good biocompatibility, and has many uses in the fields of industrial biochemistry and medicine. Hydrogel refers to a cross-linked polymer that can absorb and retain a large amount of water but is insoluble in water, and is a functional polymer material with a three-dimensional network structure. The three-dimensional network structure is formed by the cross-linking of polymer chains. Cross-linking is generally obtained by forming covalent bonds, air bonds, van der Waals forces, and physical entanglement. Due to the high water content in the hydrogel, the softness is similar to that o...

Claims

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Application Information

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IPC IPC(8): C08J3/02C08L1/02C08K3/04C08K7/24
Inventor 孙立国王伟艳李丽张艳红林颖芳
Owner HEILONGJIANG UNIV
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